A thin conducting wire is bent into the shape shown in the gure. The circular portion of the wire has radius 13.0 cm. The wire is in the plane of the screen and carries a current 2.80 A. What is the magnetic field at the center of the loop? (Give the magnitude in pT and select the direction from the options provided.) P 7 I y Think of the total magnetic field as the superposition of the field clue to the long straight wire and that due to the circular loop. Find the sum of these contributions. pT direction Consider the current-carrying wire shown in the gure. The current creates a magnetic field at the point P, which is the center of the arc segment of the wire. If = 40.0\